<p>Did you know that sharks roamed the oceans before there were trees on earth? The earliest known sharks existed almost 500 million years ago.</p>

Did you know that sharks roamed the oceans before there were trees on earth? The earliest known sharks existed almost 500 million years ago.

Talking Point - The Secret History of Sharks

Overnights is heard from 2am to 6am nationally on the ABC. There is great music and interesting guests from Australia and all parts of the globe. You'll hear conversations about food, travel, science, music, books, personal finance, sport, film, astronomy, fashion, gardening, relationships, collectables and much more.

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Talking Point - The Secret History of Sharks

Talking Point - The Secret History of Sharks

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